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A051140 formatted as a simple table:

n a(n)
0 0
1 0
2 0
3 0
4 1
5 8
6 47
7 259
8 1437
9 8208
10 48659
11 300553
12 1937958
13 13052028
14 91784452
15 673328720
16 5146726651
17 40934788112
18 338292605257
19 2900716040495
20 25769979503573
21 236876549095324
22 2249873611378525
23 22053647698650293
24 222832106687369092

[0,0,0,0,1,8,47,259,1437,8208,48659,300553,
 1937958,13052028,91784452,673328720,5146726651,
 40934788112,338292605257,2900716040495,
 25769979503573,236876549095324,2249873611378525,
 22053647698650293,222832106687369092]

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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